Fastener with anti-loosening structure

Abstract

The utility model relates to the field of fasteners, in particular to a fastener with an anti-loosening structure, which comprises a fastener body. And the fastener main body is sleeved outside the bolt in a threaded manner. According to the fastener with the anti-loosening structure, through the arrangement of the anti-loosening mechanism, the anti-loosening performance between the bolt and the fastener body can be enhanced, the phenomenon that the fastener body is loosened due to vibration is avoided, the installation position is fixed through the bolt, then the fastener body is arranged outside the bolt in a sleeving mode, and the fastener body is screwed tightly. A hexagonal screwdriver is inserted into a hexagonal groove in the lower portion of a screw, then the hexagonal screwdriver is screwed to drive the screw to rotate in a fastener body, when the screw rotates, a bevel angle is arranged at the upper end of the screw, so that a movable block and a limiting block on the inner side are pushed to stretch out of the fastener body, and the limiting block is clamped in grooves in the two sides of the outer portion of a bolt; and the internal thread in the fastener main body is matched with the external thread of the bolt, so that the looseness prevention performance of the fastener main body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the fastener field, concretely relates to a fastener with anti-loose structure. BACKGROUND

[0002] Fastener is a kind of mechanical parts for connecting and fastening parts, is widely used in various mechanical equipment, vehicle, ship, railway, bridge, building and other fields.The characteristics of fastener are that variety and specification are numerous, performance and use are different, and the degree of standardization, serialization and generalization is extremely high.Common fastener includes bolt.

[0003] Through the retrieval, the utility model fastener of announcement No.CN216842586U is suitable for locking the first fastener and the second fastener arranged in upper and lower, including: lower fastener, suitable for being screwed into the first fastener;Locking piece, arranged on the upper end surface of the lower fastener;And upper fastener, the upper fastener is suitable for passing through the second fastener and being adapted to the locking piece.The fastener has the advantages of reducing the number of nail holes and reducing the hidden danger of water leakage.

[0004] The existing fastener, most of the way of nut is fixed to bolt, but the commonly used nut fastener lacks anti-loose structure, when the position installed by bolt vibrates, the nut fastener is prone to loosen, thereby losing the effect of fastening bolt, and the fastener in the above-mentioned comparative example adopts the nut fastener to tighten the fastening outside the bolt, but such way has poor anti-loose effect, and loosening may occur when vibration occurs.

[0005] Therefore, it is necessary to invent a fastener with anti-loose structure to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a kind of fasteners with anti-loose structure, the position installed by bolt is fixed, then fastener main part is set in screw outside and is screwed, when being tightened, using hexagonal lifter inserted into the hexagonal groove below screw rod, when screw rod is rotated in fastener main body thread groove by screwing hexagonal lifter, the inclined angle of upper end is used to push the moving block and the limiting block on the inside to stretch out and retract from fastener main body interior, so that the limiting block is clamped in the recess on the both sides of bolt outside, and fastener main body is limited, and the internal thread in fastener main body is matched with the thread on the outside of bolt, so that fastener main body is not loosened, to solve the problem that the fastener in the above-mentioned comparative example in the above background technology adopts nut fastener to tighten the fastening outside the bolt, but such way has poor anti-loose effect, and loosening may occur when vibration occurs.

[0007] To achieve the above object, the utility model provides the following technical scheme: A fastener with an anti-loose structure, comprising a fastener body,

[0008] The fastener body is sleeved with a thread on the outside of the bolt, recesses are formed on the two side surfaces of the bolt, a nut is threadedly connected to the outside of the bolt, and an internal thread is formed on the inner ring surface of the fastener body.

[0009] The anti-loose mechanism is arranged on the two sides inside the fastener body and is used for preventing the fastener body from loosening.

[0010] Preferably, the internal thread formed on the inner ring of the fastener body matches the thread on the outside of the bolt, and an anti-slip block is fixedly connected to the upper part of the fastener body.

[0011] Preferably, the thread groove is formed on the two sides inside the fastener body, a screw rod is threadedly connected to the inside of the thread groove, a hexagonal groove is formed on the end surface of the screw rod, a moving block is slidingly connected to the two sides inside the fastener body, and a fixed block is fixedly connected to the outside of the moving block.

[0012] Preferably, a first spring is fixedly connected to the inner end of the thread groove, and a top block is fixedly connected to the lower end of the first spring.

[0013] Preferably, a fixed block is fixedly connected to the upper inner side of the limiting block, and a second spring is fixedly connected to the outside of the fixed block.

[0014] Preferably, the limiting block is provided with two groups, and the two groups of limiting blocks are movably clamped with the recesses formed on the two sides inside the bolt.

[0015] In the above technical scheme, the utility model provides the technical effect and advantages:

[0016] 1. The arrangement of the anti-loose mechanism can enhance the anti-loose property between the bolt and the fastener body, avoid vibration, prevent the fastener body from loosening, fix the installed position through the bolt, then sleeve the fastener body on the outside of the bolt and twist, when the fastener body is tightened, use a hexagonal screwdriver to insert into the hexagonal groove below the screw rod, at this time, twist the hexagonal screwdriver to drive the screw rod to rotate in the thread groove of the fastener body, when the screw rod rotates, use the inclined angle on the upper end to push the moving block and the limiting block on the inner side to extend and retract from the inside of the fastener body, make the limiting block clamped in the recesses on the two sides outside the bolt, limit the fastener body, and the internal thread in the fastener body matches the thread on the outside of the bolt, so that the fastener body does not loosen.

[0017] 2、Through the setting of the thread groove, the screw rod, the first spring and the top block, in the case that the fastener body is loosened due to vibration, the screw rod is screwed from the thread grooves on the two sides of the fastener body, and after the screw rod is screwed in, the top block is pushed to extrude the first spring on the rear side, the first spring and the top block are used to apply a thrust force to the screw rod, so that the screw rod is prevented from being loosened in the subsequent use process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a bolt structure schematic view of the utility model;

[0021] Figure 3 It is a fastener body structure schematic view of the utility model;

[0022] Figure 4 It is a loosening prevention mechanism structure schematic view of the utility model;

[0023] Figure 5 It is a limiting block structure schematic view of the utility model.

[0024] Explanation of reference signs:

[0025] 1, fastener body;2, bolt;3, groove;4, nut;5, internal thread;6, anti-skid block;7, loosening prevention mechanism;701, thread groove;702, screw rod;703, hexagonal groove;704, first spring;705, top block;706, moving block;707, limiting block;708, fixed block;709, second spring. DETAILED DESCRIPTION

[0026] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in combination with the drawings.

[0027] The utility model provides a fastener with loosening prevention structure as Figures 1-5 Illustrated, including fastener body 1;

[0028] Fastener body 1, threaded sleeve is set at the outside of bolt 2, and the both sides surfaces of bolt 2 are provided with groove 3, and the outside of bolt 2 is threadedly connected with nut 4, and the inner ring surface of fastener body 1 is provided with internal thread 5;

[0029] The anti-loose mechanism 7 is arranged inside the fastener body 1 on both sides, and is used to prevent the fastener body 1 from loosening. The anti-loose mechanism 7 comprises a threaded groove 701 and a limiting block 707. The threaded groove 701 is fixed in position by the bolt 2, and then the fastener body 1 is sleeved on the bolt 2 and screwed. After being screwed, a hexagonal wrench is inserted into the hexagonal groove 703 below the screw rod 702. At this time, the hexagonal wrench is screwed to drive the screw rod 702 to rotate in the threaded groove 701 of the fastener body 1. When the screw rod 702 rotates, the upper end is arranged at an angle, so as to push the moving block 706 and the limiting block 707 on the inside to extend out of the fastener body 1, so that the limiting block 707 is clamped in the groove 3 on both sides of the bolt 2 outside, and the fastener body 1 is limited. The internal thread 5 in the fastener body 1 is matched with the external thread of the bolt 2, so that the fastener body 1 cannot be loosened.

[0030] As shown in Figure 1 and Figure 4 , the internal thread 5 of the inner ring of the fastener body 1 is matched with the external thread of the bolt 2. The upper part of the fastener body 1 is fixedly connected with the anti-slip block 6. The internal thread 5 in the fastener body 1 is matched with the external thread of the bolt 2, so as to improve the firmness of the fastener body 1 and the bolt 2. The plurality of anti-slip blocks 6 on the upper part of the fastener body 1 are attached to the lower side of the nut 4, which plays a role in preventing slipping and loosening.

[0031] As shown in Figure 3 and Figure 4 , the threaded groove 701 is arranged inside the fastener body 1 on both sides. The internal thread of the threaded groove 701 is connected with the screw rod 702. The end surface of the screw rod 702 is provided with a hexagonal groove 703. The inside of the fastener body 1 is slidably connected with the moving block 706. The outside of the moving block 706 is fixedly connected with the fixed block 708. The screw rod 702 is screwed into the threaded groove 701 on both sides below the fastener body 1. The moving block 706 and the limiting block 707 on the inside are pushed out of the fastener body 1 by rotating the screw rod 702, and are limited in the groove 3 on both sides of the bolt 2, so as to strengthen the firmness and anti-loosening of the whole fastener body 1.

[0032] As shown in Figure 4 , the inner end of the threaded groove 701 is fixedly connected with the first spring 704. The lower end of the first spring 704 is fixedly connected with the top block 705. The screw rod 702 is screwed in the threaded groove 701 inside the fastener body 1 on both sides. After the screw rod 702 is screwed in, the top block 705 is pushed to compress the first spring 704 on the back side. The first spring 704 and the top block 705 exert a pushing force on the screw rod 702, so as to prevent the screw rod 702 from loosening in the subsequent use process.

[0033] As shown in Figure 4 and Figure 5As shown in the figure, the upper inner side of the limiting block 707 is fixedly connected with a fixed block 708, and the outer side of the fixed block 708 is fixedly connected with a second spring 709. When the moving block 706 loses the extrusion of the screw rod 702, the second spring 709 above the limiting block 707 rebounds, so that the limiting block 707 retracts into the inner side of the fastener body 1.

[0034] As shown in the figure, the limiting block 707 is provided with two groups, and the two groups of limiting blocks 707 are movably clamped in the grooves 3 opened in the inner sides of the two sides of the bolt 2. The two groups of limiting blocks 707 are clamped in the grooves 3 in the inner sides of the two sides of the bolt 2, thereby improving the anti-loosening property of the fastener body 1 and forming a self-locking effect. Figure 2 Figure 4 Figure 5 As shown in the figure, the limiting block 707 is provided with two groups, and the two groups of limiting blocks 707 are movably clamped in the grooves 3 opened in the inner sides of the two sides of the bolt 2. The two groups of limiting blocks 707 are clamped in the grooves 3 in the inner sides of the two sides of the bolt 2, thereby improving the anti-loosening property of the fastener body 1 and forming a self-locking effect.

[0035] The utility model works as follows: first, the bolt 2 is screwed through the position to be installed, then the nut 4 is tightened from the lower end of the bolt 2, and then the fastener body 1 is screwed under the nut 4. When the fastener body 1 is tightened in place, the anti-slip block 6 above the fastener body 1 is attached to the lower side of the nut 4, improving the anti-loosening property between the fastener body 1 and the nut 4. Next, a hexagonal extractor is inserted into the hexagonal groove 703 below the screw rod 702. At this time, the hexagonal extractor is twisted to drive the screw rod 702 to rotate in the threaded groove 701 of the fastener body 1. When the screw rod 702 rotates, the upper end is provided with an inclined angle, thereby pushing the moving block 706 in the inner side and the limiting block 707 and extruding the second spring 709 above, making the limiting block 707 retract from the inside of the fastener body 1, so that the limiting block 707 is clamped in the grooves 3 on the outer sides of the bolt 2, limiting the fastener body 1, and the internal thread 5 in the fastener body 1 is matched with the external thread of the bolt 2, thereby strengthening the anti-loosening property of the fastener body 1 as a whole, avoiding the screw rod 702 from being shaken in the fastener body 1, causing the screw rod 702 to loosen. After the screw rod 702 is screwed into the fastener body 1, it will push the top block 705 to extrude the first spring 704 behind, and the first spring 704 and the top block 705 will exert a pushing force on the screw rod 702 to prevent the screw rod 702 from loosening in the subsequent use process. In this way, the use process of the fastener with the anti-loosening structure is completed.

[0036] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled persons in the art, the described embodiments can be modified in various ways without deviating from the spirit and scope of the utility model. Therefore, the above figures and description are illustrative in nature and should not be construed as limiting the scope of protection of the utility model claims.​​

Claims

1. A fastener having a locking structure, characterized by: The fastener body (1) comprises a fastener body (1); The fastener body (1) is sleeved outside the bolt (2), the two side surfaces of the bolt (2) are provided with grooves (3), the outer surface of the bolt (2) is connected with a nut (4), and the inner surface of the fastener body (1) is provided with an internal thread (5); The anti-loosening mechanism (7) is arranged on the two sides of the fastener body (1) and is used for preventing the fastener body (1) from loosening, and the anti-loosening mechanism (7) comprises a threaded groove (701) and a limiting block (707).

2. The fastener with anti-loosening structure according to claim 1, characterized in that: The internal thread (5) of the fastener body (1) is matched with the thread on the outer surface of the bolt (2), and the upper surface of the fastener body (1) is fixedly connected with an anti-skid block (6).

3. The fastener with anti-loosening structure according to claim 1, characterized in that: The threaded groove (701) is arranged on the two sides of the fastener body (1), the threaded groove (701) is internally connected with a screw rod (702), the end surface of the screw rod (702) is provided with a hexagonal groove (703), the two sides of the fastener body (1) are slidably connected with a moving block (706), and the outer side of the moving block (706) is fixedly connected with a fixed block (708).

4. The fastener with anti-loosening structure according to claim 1, characterized in that: The inner end of the threaded groove (701) is fixedly connected with a first spring (704), and the lower end of the first spring (704) is fixedly connected with a top block (705).

5. The fastener with anti-loosening structure according to claim 1, characterized in that: The upper inner side of the limiting block (707) is fixedly connected with a fixed block (708), and the outer side of the fixed block (708) is fixedly connected with a second spring (709).

6. The fastener with anti-loosening structure according to claim 1, characterized in that: The limiting block (707) is provided with two groups, and the two groups of limiting blocks (707) are movably connected with the grooves (3) arranged in the two sides of the bolt (2).

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